/Engine/Plugins/Media/PixelStreaming/Source/PixelStreamingInput/Public/PixelStreamingInputProtocolMap.h
[FPixelStreamingInputMessage](API\Plugins\PixelStreamingInput\FPixelStreamingInputMessage) & Add ( [FString](API\Runtime\Core\Containers\FString) Key, const [FPixelStreamingInputMessage](API\Plugins\PixelStreamingInput\FPixelStreamingInputMessage) & Value )